code: def oov_idx_map(self, idx):
      return 2 if idx > self.vocab_size else idx
  
imports: import logging
  import json
  import numpy
  from collections import OrderedDict
  from .None import ontology
label_desc: Use image node_id 11 for calling the Vocab obj's underlying member method code with example usage: obj.oov_idx_map(idx) and returns: unknown